关键词: 玉米, 无机营养, 高产生理, 养分吸收和分配, 植物营养, 养分循环

Abstract: Under the conditions of different fertilities, the accumulation variance of N, P and K in the whole lifetime of maize and the absorption character of each growing period are discussed in this paper.And it is suggested that the higher the level of the fertility is, the more stable the absorption and the accumulation of the plant's lifetime remain, and that the stronger capacity of fertilities is still maintained in the late period and that the emergence of the two periods of the absorption peaks of the average level of each of the three fertilities of N, P and K has the obvious positive relationship with the increase of dry matter.And in addition, the distribution and the transference of N, P and K to each organ are analysed and the nutrition physiological indices of the maize yield 500kg/mu are also given in this paper.

Key words: CORN INORGANIC NUTRITION, PHYSIOLOGY OF HIGH YIELD, ABSORTION AND DISTRIBUTION OF THE NUTRITIONS, PLANT NUTRITION, NUTRIENT CYCLING